TECH TIP: The CZ-UB factory had problems with the early CZ P-07/09 front sights coming loose and eventually falling out of the dovetail. They now use a very strong adhesive to prevent this. We suggest putting the slide in a padded vise, remove the set screw in the OEM front sight, and heat the sight blade with a propane torch until it is very warm to nearly hot. You won’t harm the super durable finish on the slide. This will soften the adhesive, then use a brass drift to remove. You probably will not be able to save the OEM front sight for future use. We strongly recommend using blue Loctite on the slide sight base.